High Alumina Unburned Ladle Pocket Refractory Brick
The Description:
Non-fired high aluminum brick refers to high aluminum brick fired without high temperature. It has high resistance to shock. The high temperature structural strength is lower than that of fired high alumina brick. It is made of high aluminum rock soil clinker with good sintering, adding a small amount of bonding agent (such as water glass, phosphoric acid, aluminum phosphate, aluminum sulfate, aluminate cement, etc.) to mix into mud material, which is formed by high pressure molding
It is close to fired refractories in the forming process, and close to amorphous refractories in the application of bonding agents (even some books call it machine-pressed refractory concrete), which is a widely used refractory material. Non-fired high aluminum bricks are aluminum-silicon refractory products made of rock clinker with a certain amount of combined clay with A1203 content greater than 48%. European countries stipulate that the lower limit of A1203 content for non-burning high aluminum refractories is 42%. China does not burn high aluminum bricks in A1,0; The content can usually be divided into three grades :I, the content of non-burned high aluminum bricks)75%; II and other non-burning high aluminum brick content 60% to 75%; II, etc. do not burn high aluminum brick content 48% to 60%2]. It can also be classified according to its mineral composition, which can be divided into: low mullite (including sillimanite), Mullite, mullite corundum, corundum mullite and corundum classification
The brick material can be clay, high aluminum or no high aluminum. Mainly used for continuous casting tundish and water nozzle matching. It has high corrosion resistance, and is matched with misquality sizing nozzle In use, it has the advantages of no deformation, no crack, etc
Technical Index:
| Items |
Runner Brick |
Sleeve |
| Alumina |
Clay |
| BM-60R |
BM-C60R |
HL-32R |
BM-60V |
BM-50V |
HL-32V |
| Refractoriness ºC ≥ ≥ |
37 |
37 |
32 |
37 |
36 |
32 |
| B.D g/cm3 ≥ |
2.5 |
2.45 |
1.9 |
2.4 |
2.15 |
1.9 |
| Apparent porosity % ≤ |
23 |
21 |
20 |
23 |
22 |
20 |
| CCS ºC ≥ |
35 |
40 |
30 |
35 |
30 |
30 |
| RUL ºC ≥ |
1500 |
1500 |
1300 |
1450 |
1400 |
1300 |
| Thermal expansion≤ |
0.6 |
0.5 |
0.5 |
0.6 |
0.6 |
0.5 |
| AL2O3≥ |
63 |
60 |
34 |
63 |
51 |
64 |
| Fe2O3 ≤ |
2 |
2 |
2 |
2 |
2 |
2 |
Product feature:
(1) High temperature erosion resistance
The refining ladle is very strict in terms of temperature and time, and the highest temperature often reaches more than 1750. During refining operation, the alkalinity of molten slag has a great influence on the life of refractory. The basicity of ladle refining slag varies in the range of about 0.6 ~ 0.4, so the refractories are eroded by acidic and alkaline slag with strong permeability at high temperatures and the damage rate
(2) High temperature wear resistance
Various ladle refining methods use forced stirring, which is very serious for high temperature wear of the brick (3)
Because it is an inter-song operation, the temperature changes greatly, it is easy to produce heat spalling and structural spalling, and the use conditions are very harsh. At present, there is a big gap between the performance of the ladle breathable brick seat and the performance it should have, such as in the aspects of high temperature erosion resistance and stripping resistance, especially the stripping resistance needs to be improved.
Company main products and profile:
Why choose us?
Zhengzhou Kaiyuan Refractories Co., Ltd is a manufacturer of silicon-aluminum refractory (fireclay brick, high alumina brick, silica brick, mullite brick, corundum brick, insulation brick, castable, mortar) for coke oven, blast furnace, hot blast stove, heating furnace, anode baking furnace, boilers and other industrial furnaces for 20 years located in Henan, China.
Our total annual production capacity is about 100,000 tons of dense-shaped refractory product, and 100,000 tons of monolithic refractory product.
We have three tunnel kilns for silicon-aluminum dense bricks and one new plant for the monolithic refractory.
We're sure our custom-made products and professional services will bring you a stable quality supply and more profit.
Our Laboratory and R&D Center
We have test equipment for the following items:
chemical %
bulk density
apparent porosity
cold crushing strength
modulus of rupture
refractoriness under load
creep
thermal expansion
Reheat linear change
thermal shock resistance
thermal conductivity
Contract Kiln Construction
FAQ
1. Are you a Manufacturer or trader?
A: We are manufacturer and our plant is located in Xinmi city, Henan, China
2. Can we visit your company?
A: You are warmly welcome to visit our company at anytime, you'll not regret of the visiting.
3. Do you accept OEM?
A: Yes, we do OEM.
4. What's the MOQ of trial order?
A: We care about all the potential customers and take all the trails orders.
5. What is the payment term?
A: TT, LC, DP, DA.
6. How long is the delivery time?
A: Usually within 35 days after down payment.
7. Do you accept third party inspection ?
A: Yes for sure, we accept the third party inspection before delivery.
8. What is your after-sell service?
A: The rejected goods can be replaced or we can make compensation for it. We can send technical engineers to the end user for technical issue.
9.What is your company's certification?
A: ISO9001 certificate
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